3 # Copyright 2006 Free Software Foundation, Inc.
5 # This file is part of GNU Radio
7 # GNU Radio is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2, or (at your option)
12 # GNU Radio is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with GNU Radio; see the file COPYING. If not, write to
19 # the Free Software Foundation, Inc., 51 Franklin Street,
20 # Boston, MA 02110-1301, USA.
23 from gnuradio import gr
24 from gnuradio.eng_option import eng_option
25 from optparse import OptionParser
27 class dial_tone_source(gr.hier_block2):
28 def __init__(self, src, dst, port, pkt_size, sample_rate):
29 gr.hier_block2.__init__(self,
30 "dial_tone_source", # Block type
31 gr.io_signature(0,0,0), # Input signature
32 gr.io_signature(0,0,0)) # Output signature
35 self.define_component("src0", gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE,
37 self.define_component("src1", gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE,
39 self.define_component("add", gr.add_ff())
41 # Throttle needed here to account for the other side's audio card sampling rate
42 self.define_component("thr", gr.throttle(gr.sizeof_float, sample_rate))
43 self.define_component("dst", gr.udp_sink(gr.sizeof_float, src, 0, dst, port, pkt_size))
45 self.connect("src0", 0, "add", 0)
46 self.connect("src1", 0, "add", 1)
47 self.connect("add", 0, "thr", 0)
48 self.connect("thr", 0, "dst", 0)
52 if __name__ == '__main__':
53 parser = OptionParser(option_class=eng_option)
54 parser.add_option("", "--src-name", type="string", default="localhost",
55 help="local host name (domain name or IP address)")
56 parser.add_option("", "--dst-name", type="string", default="localhost",
57 help="Remote host name (domain name or IP address")
58 parser.add_option("", "--dst-port", type="int", default=65500,
59 help="port value to connect to")
60 parser.add_option("", "--packet-size", type="int", default=1472,
62 parser.add_option("-r", "--sample-rate", type="int", default=8000,
63 help="audio signal sample rate [default=%default]")
64 (options, args) = parser.parse_args()
69 # Create an instance of a hierarchical block
70 top_block = dial_tone_source(options.src_name, options.dst_name, options.dst_port,
71 options.packet_size, options.sample_rate)
73 # Create an instance of a runtime, passing it the top block
74 runtime = gr.runtime(top_block)
79 except KeyboardInterrupt: